1. Product Overview
The BDFHYK Ignition Coils Pack is engineered to provide stable high-voltage output for your vehicle's ignition system. Manufactured with high-quality materials, including Japan-imported rubber and Germany-imported varnished wire, these coil packs are designed to enhance heat resistance, abrasion resistance, and corrosion resistance, contributing to a prolonged service life.

Image: Set of four BDFHYK Ignition Coils.
Product Video
Video: An animated overview demonstrating the internal components and performance of the ignition coil, including its durability in various temperature conditions.
2. Key Features
- Advanced Material Composition: Constructed with Japan-imported rubber and Germany-imported varnished wire for superior heat, abrasion, and corrosion resistance.
- Durable Design: Features durable silicon steel material and flexible high-temp silicone for long-lasting performance.
- Enhanced Performance: Designed for shock resistance, reduced fuel consumption, strengthened motive force, and fast ignition.
- Stable High-Voltage Output: Rigorous quality control ensures consistent and stable high-voltage delivery.

Image: Diagram illustrating the internal components of the ignition coil, highlighting the primary coil, secondary coil, magnetic core, high voltage connection to spark plug, and flexible high-temp silicone.

Image: Close-up views of the ignition coil, showing its 4-pin connector, OEM replacement design, durable boots, and ABS plastic construction.
3. Compatibility
These ignition coils are compatible with various Mazda models. Please verify your vehicle's year, brand, model, and the OE number of your existing parts for accurate compatibility.
Compatible Mazda Models:
| Model | Years | Engine |
|---|---|---|
| Mazda 3 | 2014-2023 | 2.5L I4 |
| Mazda 3 | 2012-2023 | 2.0L I4 |
| Mazda 6 | 2018-2021 | 2.5L I4 |
| Mazda 6 | 2014-2021 | 2.5L I4 |
| Mazda CX-5 | 2013-2017 | 2.0L I4 |
| Mazda CX-5 | 2014-2020 | 2.5L I4 |
| Mazda CX-3 | 2016-2023 | 2.0L I4 |
| Mazda CX-5 | 2019 | 2.2L I4 |
| Mazda CX-9 | 2016-2019 | 2.5L I4 |
| Mazda MX-5 Miata | 2016-2018 | 2.0L I4 |

Image: Detailed chart of compatible Mazda models, years, and engine types.
4. OE Standard Performance & Part Numbers
BDFHYK ignition coils are manufactured to OE grade durability, ensuring high quality and reliable performance. Always cross-reference with your vehicle's original equipment (OE) part number before purchasing.
Relevant OE Part Numbers:
- PE0118100
- PE0118100A
- PE2018100
- PE2018100A
- UF-656
- UF-805
- UF656
- UF805
- UF656T
- C857
- 5C1894
- 1788527
- COP574
- 48895
- SKUF656T
- GN10625

Image: Visual list of compatible OE (Original Equipment) part numbers for the ignition coils.
5. Installation Instructions
Follow these steps carefully for proper installation of your new BDFHYK Ignition Coils. Always prioritize safety and consult your vehicle's service manual if needed.
- Disconnect the battery: Disconnect the negative battery cable to cut power. Use a socket or wrench to loosen the clamp bolt. Disconnecting power prevents electric shock and damage to the vehicle's electrical system. Avoid connecting positive and negative terminals with metal tools.
- Locate the ignition coils: Identify the ignition coils on top of the engine. They are typically attached to the engine block or surrounding components.
- Disconnect and remove the old ignition coil: Remove any bolts or screws securing the coil. Disconnect electrical connectors. Some vehicles may require unplugging connectors first, while others require unbolting the unit before disconnecting. Refer to your vehicle's service manual for the correct procedure. Note: If your ignition coils have multiple plugs or connections, mark them to ensure correct reattachment to the new coil.
- Install the new ignition coil: Install the new ignition coil in the reverse order of removal. Ensure all connections are secure.
- Reconnect the battery: Reattach the negative battery terminal to the car battery. Hand tighten the electrical connection, then use a wrench to firmly tighten the terminal bolt. Do not over-tighten to avoid damage.
- Test the new coil: Start the engine with the vehicle in park to confirm proper function of the new ignition coil.

Image: Step-by-step visual guide for installing the ignition coils.
6. Troubleshooting
If your vehicle has traveled over 80,000 km and you experience any of the following symptoms, it may be time to replace your ignition coil packs:
- Hard Starting: Difficulty starting the engine or prolonged cranking time.
- Lack of Power: Noticeable decrease in engine power or acceleration.
- Increased Fuel Consumption: A decline in fuel economy.
- Low Speed Jitter: Vehicle body shaking or vibrating noticeably when idling or at low speeds. This can be accompanied by intermittent exhaust gas flow and a 'burst' sound from the exhaust pipe.
- Weak Speed: Obvious body shakes and weak acceleration when driving below 2500 RPM. The jitter typically disappears above 2500 RPM.
Replacing worn-out ignition coils can significantly improve your car's performance and efficiency.

Image: Visual representation of common symptoms indicating the need for ignition coil replacement, such as low speed jitter, increased fuel consumption, and weak speed.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | BDFHYK |
| Model | Ignition Coil Pack (BD-05-07860) |
| Vehicle Service Type | Car |
| Item Weight | 1 Kilogram (2.2 pounds) |
| Installation Type | Coil Pack |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 785366471502 |
| Package Dimensions | 8.78 x 6.5 x 2.64 inches |
| Date First Available | August 22, 2023 |
8. Warranty and Support
BDFHYK is committed to providing high-quality products and customer satisfaction. We offer a 12-month quality guarantee service for this product.
If you encounter any issues with your BDFHYK Ignition Coils Pack, please do not hesitate to contact us immediately. We are dedicated to responding to your inquiries within 48 hours to ensure your complete satisfaction.
For further assistance or to report an issue, please visit the BDFHYK Store on Amazon or contact customer support through your purchase platform.





